refactor: full codebase overhaul — dead code removal, env validation, logger migration, date consolidation, Prisma schema cleanup, button consistency, useEffect deps, test coverage

- env.ts: added 10 missing Zod-validated env vars (imager, paypal currency, argon2/bcrypt params)
- Migrated 6 modules from process.env to validated env.* (auth, proxy-auth, paypal, password, redis, imager, moderation, alert, logger)
- Replaced console.warn/error with pino logger in 9 server-side modules
- Removed 50+ dead exports (SWF wrappers, coalesceHotelName, signIn, isStaff re-export, formatTimestamp, Skeleton/SkeletonCard, 4 unused housekeeping sections)
- Consolidated date formatting: 28 files migrated to shared formatDate() from @/lib/format-date
- Wired 4 radio/settings API routes through cached siteSettings service instead of raw Prisma queries
- Added getMany()/getAll() helpers to SiteSettings service
- Removed 88 dead Prisma model definitions (schema 2763→1846 lines)
- Created admin action-helper.ts with wrapAction() for standardized error handling
- Fixed useEffect dependency arrays in 4 data-heavy components
- Replaced raw btn CSS classes with shadcn Button component across admin pages
- Stripped dead i18n namespaces (common, pages.client) from all 22 translation files
- Removed 2 dead scripts (create-release.sh, check-local-imports.ts)
- Fixed knip.json configuration
- Added 7 new test suites: format-date, paypal, moderation, alert, webhook, action-helper, and fixed password.test.ts for env mocking
- All 358 tests passing across 72 test files
- TypeScript: 0 errors

src/lib/imager.ts

@@ -9,12 +9,13 @@
 export type { AvatarOptions } from "@/types/admin";
 
 import type { AvatarOptions } from "@/types/admin";
+import { env } from "@/env";
 
 /** Build an absolute default imager URL from public env vars. */
 function defaultImagerUrl(): string {
-	const pub = process.env.NEXT_PUBLIC_IMAGER_URL?.trim();
+	const pub = env.NEXT_PUBLIC_IMAGER_URL?.trim();
 	if (pub && !pub.includes("/api/imaging/avatar")) return pub.replace(/\/+$/, "");
-	const app = process.env.NEXT_PUBLIC_APP_URL?.trim();
+	const app = env.NEXT_PUBLIC_APP_URL?.trim();
 	if (app) return `${app.replace(/\/+$/, "")}/imaging`;
 	return "/imaging";
 }
@@ -24,7 +25,7 @@ function defaultImagerUrl(): string {
  * Rejects the broken self-hosted proxy route if stored in settings.
  */
 export function resolveImagerBase(configured?: string | null): string {
-	const fromEnv = process.env.NEXT_PUBLIC_IMAGER_URL?.trim();
+	const fromEnv = env.NEXT_PUBLIC_IMAGER_URL?.trim();
 	if (fromEnv && !fromEnv.includes("/api/imaging/avatar")) {
 		return fromEnv.replace(/\/+$/, "");
 	}
@@ -41,18 +42,13 @@ export function resolveImagerBase(configured?: string | null): string {
  * Falls back to Habbo's public imager when nothing else is configured.
  */
 export function resolveUpstreamBase(): string {
-	const fromEnv = process.env.IMAGING_UPSTREAM_URL?.trim();
+	const fromEnv = env.IMAGING_UPSTREAM_URL?.trim();
 	if (fromEnv) return fromEnv.replace(/\/+$/, "");
 	return "https://www.habbo.com/habbo-imaging/avatarimage";
 }
 
 /**
  * Build an avatar image URL (site's own `/imaging` endpoint by default).
- *
- * @example
- * getAvatarUrl('hr-893-45.hd-180-1.ch-210-66.lg-270-82')
- * getAvatarUrl(look, { size: 'l', headOnly: true })
- * getAvatarUrl(look, { size: 'm', gesture: 'sml', direction: 2 })
  */
 export function getAvatarUrl(
 	figure: string,